View Full Version : Is Apple Hardware Test Accurate?
Dec 28, 2012, 04:01 PM
Have run the "extended test" of the AHT on line. There were no faults found. However, I am having battery/charging issues.
Is AHT reliable or could I have a "bad" logic board despite the test passing? Thx.
Dec 28, 2012, 04:05 PM
It is reliable, but sometimes batteries reach their end of life. It won't necessarily appear on the test, you just have to get a new one. I suggest bringing it to an Apple Store first so they can perhaps swap out the old one with a new one, just to make sure it really is the problem, before purchase.
Dec 28, 2012, 04:38 PM
AHT has missed things before that my AASP later ended up finding. And I should mention that we've had quite a few battery / charging / power problems on the 2012 MBAs at work (we have 200).
Reset your SMC and make sure you've installed firmware updates.
Dec 28, 2012, 11:25 PM
AHT has missed things before that my AASP later ended up finding. And I should mention that we've had quite a few battery / charging / power problems on the 2012 MBAs at work.
Reset your SMC, make sure you've installed firmware updates. Failing that, off to AppleCare!
Excuse the ignorance, but how would I know if I'm current on the firmware updates? Have upgraded to Mountain Lion, current on the "software updates" that i review weekly, but have a feeling there may be something I'm missing here....
Dec 29, 2012, 02:52 AM
Firmware updates come through the usual Software Update channel — or the App Store in ML. As long as you have none in the list, you're good.
Try resetting the SMC as described by Apple here (http://support.apple.com/kb/HT3964). Failing that, head to an AASP or Apple Store.